There is a total of 40594 clues beginning with so
- Sonar transmitter
- Sonar user
- Sonar's cousin
- Sonar's measurement
- Sonar's principle
- Sonar, British style
- Sonar, in England
- Sonar, to a destroyer
- Sonar, to Brits
- Sonar-equipped flier
- Sonar
- Sonata alternative
- Sonata by 17 Across
- Sonata closer
- Sonata closer, maybe
- Sonata closers
- Sonata closers, often
- Sonata closing
- Sonata creator
- Sonata ending
- Sonata ending, often
- Sonata ends
- Sonata epilogue
- Sonata finale
- Sonata finale, often
- Sonata finale, perhaps
- Sonata finale
- Sonata finales
- Sonata finales, often
- Sonata finisher, often
- Sonata form
- Sonata instrument
- Sonata instrument?
- Sonata maker
- Sonata movement
- Sonata movement
- Sonata movements
- Sonata movements
- Sonata on the street, eg
- Sonata part
- Sonata part
- Sonata parts
- Sonata piece that means "joke" in Italian
- Sonata postscript
- Sonata producer
- Sonata quartet
- Sonata section
- Sonata sections
- Sonata segment
- Sonata starters
- Sonata that might not sound good
- Sonata's ending
- Sonata's last movement
- Sonata's last movement, often
- Sonata's last movement, perhaps
- Sonata's last movement, usually
- Sonata's last movement
- Sonata's sister
- Sonata's third movement, often
- Sonata, eg
- Sonata, for example
- Sonata, for one
- Sonatas and sonnets, eg
- Sonatas and such
- Sonatas have four of them
- Sonatas' finales
- Sonatas' third movements, often
- Sonatas, eg
- Sonatas, for example
- Sondheim antihero's surname
- Sondheim barber
- Sondheim collaborator on "Gypsy"
- Sondheim has won a lot of them
- Sondheim has won eight
- Sondheim hit: 1973
- Sondheim musical
- Sondheim musical with a quintet
- Sondheim octet
- Sondheim or Simon
- Sondheim protagonist
- Sondheim refrain: 1973
- Sondheim song
- Sondheim song "We're ___ Be All Right"
- Sondheim song starter
- Sondheim song, and a hint to the ends of 17-, 28- and 44-Across
- Sondheim title character
- Sondheim work
- Sondheim's " ___ Day Goes By"
- Sondheim's "I'm Still ___"
- Sondheim's "Into the ___"
- Sondheim's "It Takes Two," eg
- Sondheim's "Multitudes of ___"
- Sondheim's "Sweeney __"
- Sondheim's "Sweeney ___"
- Sondheim's "Sweeney ____"
- Sondheim's "Sweeney _____"
- Sondheim's "The Worst ___ in London"
- Sondheim's "__ Like That"
- Sondheim's "__ the Woods"
- Sondheim's "___ Like That"